<http://schema.org/description>
"Although placebos have played a critical role in medicine and clinical research for more than 70 years, it has been a mystery why these inactive treatments help to alleviate symptoms in some patients \u2013 and not others. Now researchers have for the first time identified genetic differences between placebo responders and non-responders, providing an important new clue to what has come to be known as &amp;quot;the placebo effect.&amp;quot;"^^<http://www.w3.org/2001/XMLSchema#string>
<http://medicalxpress.com/news/2012-10-genetic-marker-placebo-response-ibs.html>